Release 4.7 drivers/media/dvb-frontends/tda18271c2dd.c

Directory: drivers/media/dvb-frontends
/*
 * tda18271c2dd: Driver for the TDA18271C2 tuner
 *
 * Copyright (C) 2010 Digital Devices GmbH
 *
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 only, as published by the Free Software Foundation.
 *
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA
 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/i2c.h>
#include <asm/div64.h>

#include "dvb_frontend.h"
#include "tda18271c2dd.h"

/* Max transfer size done by I2C transfer functions */

#define MAX_XFER_SIZE  64


struct SStandardParam {
	
s32   m_IFFrequency;
	
u32   m_BandWidth;
	
u8    m_EP3_4_0;
	
u8    m_EB22;
};


struct SMap {
	
u32   m_Frequency;
	
u8    m_Param;
};


struct SMapI {
	
u32   m_Frequency;
	
s32    m_Param;
};


struct SMap2 {
	
u32   m_Frequency;
	
u8    m_Param1;
	
u8    m_Param2;
};


struct SRFBandMap {
	
u32   m_RF_max;
	
u32   m_RF1_Default;
	
u32   m_RF2_Default;
	
u32   m_RF3_Default;
};


enum ERegister {
	
ID = 0,
	
TM,
	
PL,
	




EP1, EP2, EP3, EP4, EP5,
	



CPD, CD1, CD2, CD3,
	



MPD, MD1, MD2, MD3,
	









EB1, EB2, EB3, EB4, EB5, EB6, EB7, EB8, EB9, EB10,
	









EB11, EB12, EB13, EB14, EB15, EB16, EB17, EB18, EB19, EB20,
	


EB21, EB22, EB23,
	
NUM_REGS
};


struct tda_state {
	
struct i2c_adapter *i2c;
	
u8 adr;

	
u32   m_Frequency;
	
u32   IF;

	
u8    m_IFLevelAnalog;
	
u8    m_IFLevelDigital;
	
u8    m_IFLevelDVBC;
	
u8    m_IFLevelDVBT;

	
u8    m_EP4;
	
u8    m_EP3_Standby;

	
bool  m_bMaster;

	
s32   m_SettlingTime;

	
u8    m_Regs[NUM_REGS];

	/* Tracking filter settings for band 0..6 */
	
u32   m_RF1[7];
	
s32   m_RF_A1[7];
	
s32   m_RF_B1[7];
	
u32   m_RF2[7];
	
s32   m_RF_A2[7];
	
s32   m_RF_B2[7];
	
u32   m_RF3[7];

	
u8    m_TMValue_RFCal;    /* Calibration temperatur */

	
bool  m_bFMInput;         /* true to use Pin 8 for FM Radio */

};

static int PowerScan(struct tda_state *state,
		     u8 RFBand, u32 RF_in,
		     u32 *pRF_Out, bool *pbcal);



static int i2c_readn(struct i2c_adapter *adapter, u8 adr, u8 *data, int len)
{
	struct i2c_msg msgs[1] = {{.addr = adr,  .flags = I2C_M_RD,
				   .buf  = data, .len   = len} };
	return (i2c_transfer(adapter, msgs, 1) == 1) ? 0 : -1;
}

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static int i2c_write(struct i2c_adapter *adap, u8 adr, u8 *data, int len)
{
	struct i2c_msg msg = {.addr = adr, .flags = 0,
			      .buf = data, .len = len};

	if (i2c_transfer(adap, &msg, 1) != 1) {
		printk(KERN_ERR "tda18271c2dd: i2c write error at addr %i\n", adr);
		return -1;
	}
	return 0;
}

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Total 78 100.00% 3 100.00%



static int WriteRegs(struct tda_state *state,
		     u8 SubAddr, u8 *Regs, u16 nRegs)
{
	u8 data[MAX_XFER_SIZE];

	if (1 + nRegs > sizeof(data)) {
		printk(KERN_WARNING
		       "%s: i2c wr: len=%d is too big!\n",
		       KBUILD_MODNAME, nRegs);
		return -EINVAL;
	}

	data[0] = SubAddr;
	memcpy(data + 1, Regs, nRegs);
	return i2c_write(state->i2c, state->adr, data, nRegs + 1);
}

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static int WriteReg(struct tda_state *state, u8 SubAddr, u8 Reg)
{
	u8 msg[2] = {SubAddr, Reg};

	return i2c_write(state->i2c, state->adr, msg, 2);
}

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static int Read(struct tda_state *state, u8 * Regs)
{
	return i2c_readn(state->i2c, state->adr, Regs, 16);
}

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static int ReadExtented(struct tda_state *state, u8 * Regs)
{
	return i2c_readn(state->i2c, state->adr, Regs, NUM_REGS);
}

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static int UpdateRegs(struct tda_state *state, u8 RegFrom, u8 RegTo)
{
	return WriteRegs(state, RegFrom,
			 &state->m_Regs[RegFrom], RegTo-RegFrom+1);
}
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static int UpdateReg(struct tda_state *state, u8 Reg)
{
	return WriteReg(state, Reg, state->m_Regs[Reg]);
}

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#include "tda18271c2dd_maps.h"



static void reset(struct tda_state *state)
{
	u32   ulIFLevelAnalog = 0;
	u32   ulIFLevelDigital = 2;
	u32   ulIFLevelDVBC = 7;
	u32   ulIFLevelDVBT = 6;
	u32   ulXTOut = 0;
	u32   ulStandbyMode = 0x06;    /* Send in stdb, but leave osc on */
	u32   ulSlave = 0;
	u32   ulFMInput = 0;
	u32   ulSettlingTime = 100;

	state->m_Frequency         = 0;
	state->m_SettlingTime = 100;
	state->m_IFLevelAnalog = (ulIFLevelAnalog & 0x07) << 2;
	state->m_IFLevelDigital = (ulIFLevelDigital & 0x07) << 2;
	state->m_IFLevelDVBC = (ulIFLevelDVBC & 0x07) << 2;
	state->m_IFLevelDVBT = (ulIFLevelDVBT & 0x07) << 2;

	state->m_EP4 = 0x20;
	if (ulXTOut != 0)
		state->m_EP4 |= 0x40;

	state->m_EP3_Standby = ((ulStandbyMode & 0x07) << 5) | 0x0F;
	state->m_bMaster = (ulSlave == 0);

	state->m_SettlingTime = ulSettlingTime;

	state->m_bFMInput = (ulFMInput == 2);
}

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static bool SearchMap1(struct SMap Map[],
		       u32 Frequency, u8 *pParam)
{
	int i = 0;

	while ((Map[i].m_Frequency != 0) && (Frequency > Map[i].m_Frequency))
		i += 1;
	if (Map[i].m_Frequency == 0)
		return false;
	*pParam = Map[i].m_Param;
	return true;
}

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static bool SearchMap2(struct SMapI Map[],
		       u32 Frequency, s32 *pParam)
{
	int i = 0;

	while ((Map[i].m_Frequency != 0) &&
	       (Frequency > Map[i].m_Frequency))
		i += 1;
	if (Map[i].m_Frequency == 0)
		return false;
	*pParam = Map[i].m_Param;
	return true;
}

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static bool SearchMap3(struct SMap2 Map[], u32 Frequency,
		       u8 *pParam1, u8 *pParam2)
{
	int i = 0;

	while ((Map[i].m_Frequency != 0) &&
	       (Frequency > Map[i].m_Frequency))
		i += 1;
	if (Map[i].m_Frequency == 0)
		return false;
	*pParam1 = Map[i].m_Param1;
	*pParam2 = Map[i].m_Param2;
	return true;
}

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static bool SearchMap4(struct SRFBandMap Map[],
		       u32 Frequency, u8 *pRFBand)
{
	int i = 0;

	while (i < 7 && (Frequency > Map[i].m_RF_max))
		i += 1;
	if (i == 7)
		return false;
	*pRFBand = i;
	return true;
}

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static int ThermometerRead(struct tda_state *state, u8 *pTM_Value)
{
	int status = 0;

	do {
		u8 Regs[16];
		state->m_Regs[TM] |= 0x10;
		status = UpdateReg(state, TM);
		if (status < 0)
			break;
		status = Read(state, Regs);
		if (status < 0)
			break;
		if (((Regs[TM] & 0x0F) == 0 && (Regs[TM] & 0x20) == 0x20) ||
		    ((Regs[TM] & 0x0F) == 8 && (Regs[TM] & 0x20) == 0x00)) {
			state->m_Regs[TM] ^= 0x20;
			status = UpdateReg(state, TM);
			if (status < 0)
				break;
			msleep(10);
			status = Read(state, Regs);
			if (status < 0)
				break;
		}
		*pTM_Value = (Regs[TM] & 0x20)
				? m_Thermometer_Map_2[Regs[TM] & 0x0F]
				: m_Thermometer_Map_1[Regs[TM] & 0x0F] ;
		state->m_Regs[TM] &= ~0x10;        /* Thermometer off */
		status = UpdateReg(state, TM);
		if (status < 0)
			break;
		state->m_Regs[EP4] &= ~0x03;       /* CAL_mode = 0 ????????? */
		status = UpdateReg(state, EP4);
		if (status < 0)
			break;
	} while (0);

	return status;
}

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Total 262 100.00% 3 100.00%



static int StandBy(struct tda_state *state)
{
	int status = 0;
	do {
		state->m_Regs[EB12] &= ~0x20;  /* PD_AGC1_Det = 0 */
		status = UpdateReg(state, EB12);
		if (status < 0)
			break;
		state->m_Regs[EB18] &= ~0x83;  /* AGC1_loop_off = 0, AGC1_Gain = 6 dB */
		status = UpdateReg(state, EB18);
		if (status < 0)
			break;
		state->m_Regs[EB21] |= 0x03; /* AGC2_Gain = -6 dB */
		state->m_Regs[EP3] = state->m_EP3_Standby;
		status = UpdateReg(state, EP3);
		if (status < 0)
			break;
		state->m_Regs[EB23] &= ~0x06; /* ForceLP_Fc2_En = 0, LP_Fc[2] = 0 */
		status = UpdateRegs(state, EB21, EB23);
		if (status < 0)
			break;
	} while (0);
	return status;
}

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Total 147 100.00% 3 100.00%



static int CalcMainPLL(struct tda_state *state, u32 freq)
{

	u8  PostDiv;
	u8  Div;
	u64 OscFreq;
	u32 MainDiv;

	if (!SearchMap3(m_Main_PLL_Map, freq, &PostDiv, &Div))
		return -EINVAL;

	OscFreq = (u64) freq * (u64) Div;
	OscFreq *= (u64) 16384;
	do_div(OscFreq, (u64)16000000);
	MainDiv = OscFreq;

	state->m_Regs[MPD] = PostDiv & 0x77;
	state->m_Regs[MD1] = ((MainDiv >> 16) & 0x7F);
	state->m_Regs[MD2] = ((MainDiv >>  8) & 0xFF);
	state->m_Regs[MD3] = (MainDiv & 0xFF);

	return UpdateRegs(state, MPD, MD3);
}

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static int CalcCalPLL(struct tda_state *state, u32 freq)
{
	u8 PostDiv;
	u8 Div;
	u64 OscFreq;
	u32 CalDiv;

	if (!SearchMap3(m_Cal_PLL_Map, freq, &PostDiv, &Div))
		return -EINVAL;

	OscFreq = (u64)freq * (u64)Div;
	/* CalDiv = u32( OscFreq * 16384 / 16000000 ); */
	OscFreq *= (u64)16384;
	do_div(OscFreq, (u64)16000000);
	CalDiv = OscFreq;

	state->m_Regs[CPD] = PostDiv;
	state->m_Regs[CD1] = ((CalDiv >> 16) & 0xFF);
	state->m_Regs[CD2] = ((CalDiv >>  8) & 0xFF);
	state->m_Regs[CD3] = (CalDiv & 0xFF);

	return UpdateRegs(state, CPD, CD3);
}

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static int CalibrateRF(struct tda_state *state,
		       u8 RFBand, u32 freq, s32 *pCprog)
{
	int status = 0;
	u8 Regs[NUM_REGS];
	do {
		u8 BP_Filter = 0;
		u8 GainTaper = 0;
		u8 RFC_K = 0;
		u8 RFC_M = 0;

		state->m_Regs[EP4] &= ~0x03; /* CAL_mode = 0 */
		status = UpdateReg(state, EP4);
		if (status < 0)
			break;
		state->m_Regs[EB18] |= 0x03;  /* AGC1_Gain = 3 */
		status = UpdateReg(state, EB18);
		if (status < 0)
			break;

		/* Switching off LT (as datasheet says) causes calibration on C1 to fail */
		/* (Readout of Cprog is allways 255) */
		if (state->m_Regs[ID] != 0x83)    /* C1: ID == 83, C2: ID == 84 */
			state->m_Regs[EP3] |= 0x40; /* SM_LT = 1 */

		if (!(SearchMap1(m_BP_Filter_Map, freq, &BP_Filter) &&
			SearchMap1(m_GainTaper_Map, freq, &GainTaper) &&
			SearchMap3(m_KM_Map, freq, &RFC_K, &RFC_M)))
			return -EINVAL;

		state->m_Regs[EP1] = (state->m_Regs[EP1] & ~0x07) | BP_Filter;
		state->m_Regs[EP2] = (RFBand << 5) | GainTaper;

		state->m_Regs[EB13] = (state->m_Regs[EB13] & ~0x7C) | (RFC_K << 4) | (RFC_M << 2);

		status = UpdateRegs(state, EP1, EP3);
		if (status < 0)
			break;
		status = UpdateReg(state, EB13);
		if (status < 0)
			break;

		state->m_Regs[EB4] |= 0x20;    /* LO_ForceSrce = 1 */
		status = UpdateReg(state, EB4);
		if (status < 0)
			break;

		state->m_Regs[EB7] |= 0x20;    /* CAL_ForceSrce = 1 */
		status = UpdateReg(state, EB7);
		if (status < 0)
			break;

		state->m_Regs[EB14] = 0; /* RFC_Cprog = 0 */
		status = UpdateReg(state, EB14);
		if (status < 0)
			break;

		state->m_Regs[EB20] &= ~0x20;  /* ForceLock = 0; */
		status = UpdateReg(state, EB20);
		if (status < 0)
			break;

		state->m_Regs[EP4] |= 0x03;  /* CAL_Mode = 3 */
		status = UpdateRegs(state, EP4, EP5);
		if (status < 0)
			break;

		status = CalcCalPLL(state, freq);
		if (status < 0)
			break;
		status = CalcMainPLL(state, freq + 1000000);
		if (status < 0)
			break;

		msleep(5);
		status = UpdateReg(state, EP2);
		if (status < 0)
			break;
		status = UpdateReg(state, EP1);
		if (status < 0)
			break;
		status = UpdateReg(state, EP2);
		if (status < 0)
			break;
		status = UpdateReg(state, EP1);
		if (status < 0)
			break;

		state->m_Regs[EB4] &= ~0x20;    /* LO_ForceSrce = 0 */
		status = UpdateReg(state, EB4);
		if (status < 0)
			break;

		state->m_Regs[EB7] &= ~0x20;    /* CAL_ForceSrce = 0 */
		status = UpdateReg(state, EB7);
		if (status < 0)
			break;
		msleep(10);

		state->m_Regs[EB20] |= 0x20;  /* ForceLock = 1; */
		status = UpdateReg(state, EB20);
		if (status < 0)
			break;
		msleep(60);

		state->m_Regs[EP4] &= ~0x03;  /* CAL_Mode = 0 */
		state->m_Regs[EP3] &= ~0x40; /* SM_LT = 0 */
		state->m_Regs[EB18] &= ~0x03;  /* AGC1_Gain = 0 */
		status = UpdateReg(state, EB18);
		if (status < 0)
			break;
		status = UpdateRegs(state, EP3, EP4);
		if (status < 0)
			break;
		status = UpdateReg(state, EP1);
		if (status < 0)
			break;

		status = ReadExtented(state, Regs);
		if (status < 0)
			break;

		*pCprog = Regs[EB14];

	} while (0);
	return status;
}

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Total 716 100.00% 3 100.00%



static int RFTrackingFiltersInit(struct tda_state *state,
				 u8 RFBand)
{
	int status = 0;

	u32   RF1 = m_RF_Band_Map[RFBand].m_RF1_Default;
	u32   RF2 = m_RF_Band_Map[RFBand].m_RF2_Default;
	u32   RF3 = m_RF_Band_Map[RFBand].m_RF3_Default;
	bool    bcal = false;

	s32    Cprog_cal1 = 0;
	s32    Cprog_table1 = 0;
	s32    Cprog_cal2 = 0;
	s32    Cprog_table2 = 0;
	s32    Cprog_cal3 = 0;
	s32    Cprog_table3 = 0;

	state->m_RF_A1[RFBand] = 0;
	state->m_RF_B1[RFBand] = 0;
	state->m_RF_A2[RFBand] = 0;
	state->m_RF_B2[RFBand] = 0;

	do {
		status = PowerScan(state, RFBand, RF1, &RF1, &bcal);
		if (status < 0)
			break;
		if (bcal) {
			status = CalibrateRF(state, RFBand, RF1, &Cprog_cal1);
			if (status < 0)
				break;
		}
		SearchMap2(m_RF_Cal_Map, RF1, &Cprog_table1);
		if (!bcal)
			Cprog_cal1 = Cprog_table1;
		state->m_RF_B1[RFBand] = Cprog_cal1 - Cprog_table1;
		/* state->m_RF_A1[RF_Band] = ???? */

		if (RF2 == 0)
			break;

		status = PowerScan(state, RFBand, RF2, &RF2, &bcal);
		if (status < 0)
			break;
		if (bcal) {
			status = CalibrateRF(state, RFBand, RF2, &Cprog_cal2);
			if (status < 0)
				break;
		}
		SearchMap2(m_RF_Cal_Map, RF2, &Cprog_table2);
		if (!bcal)
			Cprog_cal2 = Cprog_table2;

		state->m_RF_A1[RFBand] =
			(Cprog_cal2 - Cprog_table2 - Cprog_cal1 + Cprog_table1) /
			((s32)(RF2) - (s32)(RF1));

		if (RF3 == 0)
			break;

		status = PowerScan(state, RFBand, RF3, &RF3, &bcal);
		if (status < 0)
			break;
		if (bcal) {
			status = CalibrateRF(state, RFBand, RF3, &Cprog_cal3);
			if (status < 0)
				break;
		}
		SearchMap2(m_RF_Cal_Map, RF3, &Cprog_table3);
		if (!bcal)
			Cprog_cal3 = Cprog_table3;
		state->m_RF_A2[RFBand] = (Cprog_cal3 - Cprog_table3 - Cprog_cal2 + Cprog_table2) / ((s32)(RF3) - (s32)(RF2));
		state->m_RF_B2[RFBand] = Cprog_cal2 - Cprog_table2;

	} while (0);

	state->m_RF1[RFBand] = RF1;
	state->m_RF2[RFBand] = RF2;
	state->m_RF3[RFBand] = RF3;

#if 0
	printk(KERN_ERR "tda18271c2dd: %s %d RF1 = %d A1 = %d B1 = %d RF2 = %d A2 = %d B2 = %d RF3 = %d\n", __func__,
               RFBand, RF1, state->m_RF_A1[RFBand], state->m_RF_B1[RFBand], RF2,
               state->m_RF_A2[RFBand], state->m_RF_B2[RFBand], RF3);
#endif

	return status;
}

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oliver endriss oliver endriss 1 0.21% 1 25.00%
Total 477 100.00% 4 100.00%



static int PowerScan(struct tda_state *state,
		     u8 RFBand, u32 RF_in, u32 *pRF_Out, bool *pbcal)
{
	int status = 0;
	do {
		u8   Gain_Taper = 0;
		s32  RFC_Cprog = 0;
		u8   CID_Target = 0;
		u8   CountLimit = 0;
		u32  freq_MainPLL;
		u8   Regs[NUM_REGS];
		u8   CID_Gain;
		s32  Count = 0;
		int  sign  = 1;
		bool wait = false;

		if (!(SearchMap2(m_RF_Cal_Map, RF_in, &RFC_Cprog) &&
		      SearchMap1(m_GainTaper_Map, RF_in, &Gain_Taper) &&
		      SearchMap3(m_CID_Target_Map, RF_in, &CID_Target, &CountLimit))) {

			printk(KERN_ERR "tda18271c2dd: %s Search map failed\n", __func__);
			return -EINVAL;
		}

		state->m_Regs[EP2] = (RFBand << 5) | Gain_Taper;
		state->m_Regs[EB14] = (RFC_Cprog);
		status = UpdateReg(state, EP2);
		if (status < 0)
			break;
		status = UpdateReg(state, EB14);
		if (status < 0)
			break;

		freq_MainPLL = RF_in + 1000000;
		status = CalcMainPLL(state, freq_MainPLL);
		if (status < 0)
			break;
		msleep(5);
		state->m_Regs[EP4] = (state->m_Regs[EP4] & ~0x03) | 1;    /* CAL_mode = 1 */
		status = UpdateReg(state, EP4);
		if (status < 0)
			break;
		status = UpdateReg(state, EP2);  /* Launch power measurement */
		if (status < 0)
			break;
		status = ReadExtented(state, Regs);
		if (status < 0)
			break;
		CID_Gain = Regs[EB10] & 0x3F;
		state->m_Regs[ID] = Regs[ID];  /* Chip version, (needed for C1 workarround in CalibrateRF) */

		*pRF_Out = RF_in;

		while (CID_Gain < CID_Target) {
			freq_MainPLL = RF_in + sign * Count + 1000000;
			status = CalcMainPLL(state, freq_MainPLL);
			if (status < 0)
				break;
			msleep(wait ? 5 : 1);
			wait = false;
			status = UpdateReg(state, EP2);  /* Launch power measurement */
			if (status < 0)
				break;
			status = ReadExtented(state, Regs);
			if (status < 0)
				break;
			CID_Gain = Regs[EB10] & 0x3F;
			Count += 200000;

			if (Count < CountLimit * 100000)
				continue;
			if (sign < 0)
				break;

			sign = -sign;
			Count = 200000;
			wait = true;
		}
		status = status;
		if (status < 0)
			break;
		if (CID_Gain >= CID_Target) {
			*pbcal = true;
			*pRF_Out = freq_MainPLL - 1000000;
		} else
			*pbcal = false;
	} while (0);

	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 385 79.88% 1 25.00%
mauro carvalho chehab mauro carvalho chehab 91 18.88% 2 50.00%
oliver endriss oliver endriss 6 1.24% 1 25.00%
Total 482 100.00% 4 100.00%



static int PowerScanInit(struct tda_state *state)
{
	int status = 0;
	do {
		state->m_Regs[EP3] = (state->m_Regs[EP3] & ~0x1F) | 0x12;
		state->m_Regs[EP4] = (state->m_Regs[EP4] & ~0x1F); /* If level = 0, Cal mode = 0 */
		status = UpdateRegs(state, EP3, EP4);
		if (status < 0)
			break;
		state->m_Regs[EB18] = (state->m_Regs[EB18] & ~0x03); /* AGC 1 Gain = 0 */
		status = UpdateReg(state, EB18);
		if (status < 0)
			break;
		state->m_Regs[EB21] = (state->m_Regs[EB21] & ~0x03); /* AGC 2 Gain = 0 (Datasheet = 3) */
		state->m_Regs[EB23] = (state->m_Regs[EB23] | 0x06); /* ForceLP_Fc2_En = 1, LPFc[2] = 1 */
		status = UpdateRegs(state, EB21, EB23);
		if (status < 0)
			break;
	} while (0);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 148 82.68% 1 33.33%
mauro carvalho chehab mauro carvalho chehab 27 15.08% 1 33.33%
oliver endriss oliver endriss 4 2.23% 1 33.33%
Total 179 100.00% 3 100.00%



static int CalcRFFilterCurve(struct tda_state *state)
{
	int status = 0;
	do {
		msleep(200);      /* Temperature stabilisation */
		status = PowerScanInit(state);
		if (status < 0)
			break;
		status = RFTrackingFiltersInit(state, 0);
		if (status < 0)
			break;
		status = RFTrackingFiltersInit(state, 1);
		if (status < 0)
			break;
		status = RFTrackingFiltersInit(state, 2);
		if (status < 0)
			break;
		status = RFTrackingFiltersInit(state, 3);
		if (status < 0)
			break;
		status = RFTrackingFiltersInit(state, 4);
		if (status < 0)
			break;
		status = RFTrackingFiltersInit(state, 5);
		if (status < 0)
			break;
		status = RFTrackingFiltersInit(state, 6);
		if (status < 0)
			break;
		status = ThermometerRead(state, &state->m_TMValue_RFCal); /* also switches off Cal mode !!! */
		if (status < 0)
			break;
	} while (0);

	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 96 53.63% 1 33.33%
mauro carvalho chehab mauro carvalho chehab 81 45.25% 1 33.33%
oliver endriss oliver endriss 2 1.12% 1 33.33%
Total 179 100.00% 3 100.00%



static int FixedContentsI2CUpdate(struct tda_state *state)
{
	static u8 InitRegs[] = {
		0x08, 0x80, 0xC6,
		0xDF, 0x16, 0x60, 0x80,
		0x80, 0x00, 0x00, 0x00,
		0x00, 0x00, 0x00, 0x00,
		0xFC, 0x01, 0x84, 0x41,
		0x01, 0x84, 0x40, 0x07,
		0x00, 0x00, 0x96, 0x3F,
		0xC1, 0x00, 0x8F, 0x00,
		0x00, 0x8C, 0x00, 0x20,
		0xB3, 0x48, 0xB0,
        };
	int status = 0;
	memcpy(&state->m_Regs[TM], InitRegs, EB23 - TM + 1);
	do {
		status = UpdateRegs(state, TM, EB23);
		if (status < 0)
			break;

		/* AGC1 gain setup */
		state->m_Regs[EB17] = 0x00;
		status = UpdateReg(state, EB17);
		if (status < 0)
			break;
		state->m_Regs[EB17] = 0x03;
		status = UpdateReg(state, EB17);
		if (status < 0)
			break;
		state->m_Regs[EB17] = 0x43;
		status = UpdateReg(state, EB17);
		if (status < 0)
			break;
		state->m_Regs[EB17] = 0x4C;
		status = UpdateReg(state, EB17);
		if (status < 0)
			break;

		/* IRC Cal Low band */
		state->m_Regs[EP3] = 0x1F;
		state->m_Regs[EP4] = 0x66;
		state->m_Regs[EP5] = 0x81;
		state->m_Regs[CPD] = 0xCC;
		state->m_Regs[CD1] = 0x6C;
		state->m_Regs[CD2] = 0x00;
		state->m_Regs[CD3] = 0x00;
		state->m_Regs[MPD] = 0xC5;
		state->m_Regs[MD1] = 0x77;
		state->m_Regs[MD2] = 0x08;
		state->m_Regs[MD3] = 0x00;
		status = UpdateRegs(state, EP2, MD3); /* diff between sw and datasheet (ep3-md3) */
		if (status < 0)
			break;

#if 0
		state->m_Regs[EB4] = 0x61;          /* missing in sw */
		status = UpdateReg(state, EB4);
                if (status < 0)
                        break;
                msleep(1);
                state->m_Regs[EB4] = 0x41;
                status = UpdateReg(state, EB4);
                if (status < 0)
                        break;
#endif

		msleep(5);
		status = UpdateReg(state, EP1);
		if (status < 0)
			break;
		msleep(5);

		state->m_Regs[EP5] = 0x85;
		state->m_Regs[CPD] = 0xCB;
		state->m_Regs[CD1] = 0x66;
		state->m_Regs[CD2] = 0x70;
		status = UpdateRegs(state, EP3, CD3);
		if (status < 0)
			break;
		msleep(5);
		status = UpdateReg(state, EP2);
		if (status < 0)
			break;
		msleep(30);

		/* IRC Cal mid band */
		state->m_Regs[EP5] = 0x82;
		state->m_Regs[CPD] = 0xA8;
		state->m_Regs[CD2] = 0x00;
		state->m_Regs[MPD] = 0xA1; /* Datasheet = 0xA9 */
		state->m_Regs[MD1] = 0x73;
		state->m_Regs[MD2] = 0x1A;
		status = UpdateRegs(state, EP3, MD3);
		if (status < 0)
			break;

		msleep(5);
		status = UpdateReg(state, EP1);
		if (status < 0)
			break;
		msleep(5);

		state->m_Regs[EP5] = 0x86;
		state->m_Regs[CPD] = 0xA8;
		state->m_Regs[CD1] = 0x66;
		state->m_Regs[CD2] = 0xA0;
		status = UpdateRegs(state, EP3, CD3);
		if (status < 0)
			break;
		msleep(5);
		status = UpdateReg(state, EP2);
		if (status < 0)
			break;
		msleep(30);

		/* IRC Cal high band */
		state->m_Regs[EP5] = 0x83;
		state->m_Regs[CPD] = 0x98;
		state->m_Regs[CD1] = 0x65;
		state->m_Regs[CD2] = 0x00;
		state->m_Regs[MPD] = 0x91;  /* Datasheet = 0x91 */
		state->m_Regs[MD1] = 0x71;
		state->m_Regs[MD2] = 0xCD;
		status = UpdateRegs(state, EP3, MD3);
		if (status < 0)
			break;
		msleep(5);
		status = UpdateReg(state, EP1);
		if (status < 0)
			break;
		msleep(5);
		state->m_Regs[EP5] = 0x87;
		state->m_Regs[CD1] = 0x65;
		state->m_Regs[CD2] = 0x50;
		status = UpdateRegs(state, EP3, CD3);
		if (status < 0)
			break;
		msleep(5);
		status = UpdateReg(state, EP2);
		if (status < 0)
			break;
		msleep(30);

		/* Back to normal */
		state->m_Regs[EP4] = 0x64;
		status = UpdateReg(state, EP4);
		if (status < 0)
			break;
		status = UpdateReg(state, EP1);
		if (status < 0)
			break;

	} while (0);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 696 78.82% 1 33.33%
mauro carvalho chehab mauro carvalho chehab 172 19.48% 1 33.33%
oliver endriss oliver endriss 15 1.70% 1 33.33%
Total 883 100.00% 3 100.00%



static int InitCal(struct tda_state *state)
{
	int status = 0;

	do {
		status = FixedContentsI2CUpdate(state);
		if (status < 0)
			break;
		status = CalcRFFilterCurve(state);
		if (status < 0)
			break;
		status = StandBy(state);
		if (status < 0)
			break;
		/* m_bInitDone = true; */
	} while (0);
	return status;
}Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 42 60.00% 1 33.33%
mauro carvalho chehab mauro carvalho chehab 27 38.57% 1 33.33%
oliver endriss oliver endriss 1 1.43% 1 33.33%
Total 70 100.00% 3 100.00%

;



static int RFTrackingFiltersCorrection(struct tda_state *state,
				       u32 Frequency)
{
	int status = 0;
	s32 Cprog_table;
	u8 RFBand;
	u8 dCoverdT;

	if (!SearchMap2(m_RF_Cal_Map, Frequency, &Cprog_table) ||
	    !SearchMap4(m_RF_Band_Map, Frequency, &RFBand) ||
	    !SearchMap1(m_RF_Cal_DC_Over_DT_Map, Frequency, &dCoverdT))

		return -EINVAL;

	do {
		u8 TMValue_Current;
		u32   RF1 = state->m_RF1[RFBand];
		u32   RF2 = state->m_RF1[RFBand];
		u32   RF3 = state->m_RF1[RFBand];
		s32    RF_A1 = state->m_RF_A1[RFBand];
		s32    RF_B1 = state->m_RF_B1[RFBand];
		s32    RF_A2 = state->m_RF_A2[RFBand];
		s32    RF_B2 = state->m_RF_B2[RFBand];
		s32 Capprox = 0;
		int TComp;

		state->m_Regs[EP3] &= ~0xE0;  /* Power up */
		status = UpdateReg(state, EP3);
		if (status < 0)
			break;

		status = ThermometerRead(state, &TMValue_Current);
		if (status < 0)
			break;

		if (RF3 == 0 || Frequency < RF2)
			Capprox = RF_A1 * ((s32)(Frequency) - (s32)(RF1)) + RF_B1 + Cprog_table;
		else
			Capprox = RF_A2 * ((s32)(Frequency) - (s32)(RF2)) + RF_B2 + Cprog_table;

		TComp = (int)(dCoverdT) * ((int)(TMValue_Current) - (int)(state->m_TMValue_RFCal))/1000;

		Capprox += TComp;

		if (Capprox < 0)
			Capprox = 0;
		else if (Capprox > 255)
			Capprox = 255;


		/* TODO Temperature compensation. There is defenitely a scale factor */
		/*      missing in the datasheet, so leave it out for now.           */
		state->m_Regs[EB14] = Capprox;

		status = UpdateReg(state, EB14);
		if (status < 0)
			break;

	} while (0);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 313 91.25% 1 33.33%
mauro carvalho chehab mauro carvalho chehab 27 7.87% 1 33.33%
oliver endriss oliver endriss 3 0.87% 1 33.33%
Total 343 100.00% 3 100.00%



static int ChannelConfiguration(struct tda_state *state,
				u32 Frequency, int Standard)
{

	s32 IntermediateFrequency = m_StandardTable[Standard].m_IFFrequency;
	int status = 0;

	u8 BP_Filter = 0;
	u8 RF_Band = 0;
	u8 GainTaper = 0;
	u8 IR_Meas = 0;

	state->IF = IntermediateFrequency;
	/* printk("tda18271c2dd: %s Freq = %d Standard = %d IF = %d\n", __func__, Frequency, Standard, IntermediateFrequency); */
	/* get values from tables */

	if (!(SearchMap1(m_BP_Filter_Map, Frequency, &BP_Filter) &&
	       SearchMap1(m_GainTaper_Map, Frequency, &GainTaper) &&
	       SearchMap1(m_IR_Meas_Map, Frequency, &IR_Meas) &&
	       SearchMap4(m_RF_Band_Map, Frequency, &RF_Band))) {

		printk(KERN_ERR "tda18271c2dd: %s SearchMap failed\n", __func__);
		return -EINVAL;
	}

	do {
		state->m_Regs[EP3] = (state->m_Regs[EP3] & ~0x1F) | m_StandardTable[Standard].m_EP3_4_0;
		state->m_Regs[EP3] &= ~0x04;   /* switch RFAGC to high speed mode */

		/* m_EP4 default for XToutOn, CAL_Mode (0) */
		state->m_Regs[EP4] = state->m_EP4 | ((Standard > HF_AnalogMax) ? state->m_IFLevelDigital : state->m_IFLevelAnalog);
		/* state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDigital; */
		if (Standard <= HF_AnalogMax)
			state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelAnalog;
		else if (Standard <= HF_ATSC)
			state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDVBT;
		else if (Standard <= HF_DVBC)
			state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDVBC;
		else
			state->m_Regs[EP4] = state->m_EP4 | state->m_IFLevelDigital;

		if ((Standard == HF_FM_Radio) && state->m_bFMInput)
			state->m_Regs[EP4] |= 0x80;

		state->m_Regs[MPD] &= ~0x80;
		if (Standard > HF_AnalogMax)
			state->m_Regs[MPD] |= 0x80; /* Add IF_notch for digital */

		state->m_Regs[EB22] = m_StandardTable[Standard].m_EB22;

		/* Note: This is missing from flowchart in TDA18271 specification ( 1.5 MHz cutoff for FM ) */
		if (Standard == HF_FM_Radio)
			state->m_Regs[EB23] |=  0x06; /* ForceLP_Fc2_En = 1, LPFc[2] = 1 */
		else
			state->m_Regs[EB23] &= ~0x06; /* ForceLP_Fc2_En = 0, LPFc[2] = 0 */

		status = UpdateRegs(state, EB22, EB23);
		if (status < 0)
			break;

		state->m_Regs[EP1] = (state->m_Regs[EP1] & ~0x07) | 0x40 | BP_Filter;   /* Dis_Power_level = 1, Filter */
		state->m_Regs[EP5] = (state->m_Regs[EP5] & ~0x07) | IR_Meas;
		state->m_Regs[EP2] = (RF_Band << 5) | GainTaper;

		state->m_Regs[EB1] = (state->m_Regs[EB1] & ~0x07) |
			(state->m_bMaster ? 0x04 : 0x00); /* CALVCO_FortLOn = MS */
		/* AGC1_always_master = 0 */
		/* AGC_firstn = 0 */
		status = UpdateReg(state, EB1);
		if (status < 0)
			break;

		if (state->m_bMaster) {
			status = CalcMainPLL(state, Frequency + IntermediateFrequency);
			if (status < 0)
				break;
			status = UpdateRegs(state, TM, EP5);
			if (status < 0)
				break;
			state->m_Regs[EB4] |= 0x20;    /* LO_forceSrce = 1 */
			status = UpdateReg(state, EB4);
			if (status < 0)
				break;
			msleep(1);
			state->m_Regs[EB4] &= ~0x20;   /* LO_forceSrce = 0 */
			status = UpdateReg(state, EB4);
			if (status < 0)
				break;
		} else {
			u8 PostDiv = 0;
			u8 Div;
			status = CalcCalPLL(state, Frequency + IntermediateFrequency);
			if (status < 0)
				break;

			SearchMap3(m_Cal_PLL_Map, Frequency + IntermediateFrequency, &PostDiv, &Div);
			state->m_Regs[MPD] = (state->m_Regs[MPD] & ~0x7F) | (PostDiv & 0x77);
			status = UpdateReg(state, MPD);
			if (status < 0)
				break;
			status = UpdateRegs(state, TM, EP5);
			if (status < 0)
				break;

			state->m_Regs[EB7] |= 0x20;    /* CAL_forceSrce = 1 */
			status = UpdateReg(state, EB7);
			if (status < 0)
				break;
			msleep(1);
			state->m_Regs[EB7] &= ~0x20;   /* CAL_forceSrce = 0 */
			status = UpdateReg(state, EB7);
			if (status < 0)
				break;
		}
		msleep(20);
		if (Standard != HF_FM_Radio)
			state->m_Regs[EP3] |= 0x04;    /* RFAGC to normal mode */
		status = UpdateReg(state, EP3);
		if (status < 0)
			break;

	} while (0);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 659 83.10% 1 16.67%
mauro carvalho chehab mauro carvalho chehab 114 14.38% 3 50.00%
oliver endriss oliver endriss 19 2.40% 1 16.67%
dan carpenter dan carpenter 1 0.13% 1 16.67%
Total 793 100.00% 6 100.00%



static int sleep(struct dvb_frontend *fe)
{
	struct tda_state *state = fe->tuner_priv;

	StandBy(state);
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 28 100.00% 1 100.00%
Total 28 100.00% 1 100.00%



static int init(struct dvb_frontend *fe)
{
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 14 100.00% 1 100.00%
Total 14 100.00% 1 100.00%



static int release(struct dvb_frontend *fe)
{
	kfree(fe->tuner_priv);
	fe->tuner_priv = NULL;
	return 0;
}


Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 27 100.00% 1 100.00%
Total 27 100.00% 1 100.00%



static int set_params(struct dvb_frontend *fe)
{
	struct tda_state *state = fe->tuner_priv;
	int status = 0;
	int Standard;
	u32 bw = fe->dtv_property_cache.bandwidth_hz;
	u32 delsys  = fe->dtv_property_cache.delivery_system;

	state->m_Frequency = fe->dtv_property_cache.frequency;

	switch (delsys) {
	case  SYS_DVBT:
	case  SYS_DVBT2:
		switch (bw) {
		case 6000000:
			Standard = HF_DVBT_6MHZ;
			break;
		case 7000000:
			Standard = HF_DVBT_7MHZ;
			break;
		case 8000000:
			Standard = HF_DVBT_8MHZ;
			break;
		default:
			return -EINVAL;
		}
	case SYS_DVBC_ANNEX_A:
	case SYS_DVBC_ANNEX_C:
		if (bw <= 6000000)
			Standard = HF_DVBC_6MHZ;
		else if (bw <= 7000000)
			Standard = HF_DVBC_7MHZ;
		else
			Standard = HF_DVBC_8MHZ;
		break;
	default:
		return -EINVAL;
	}
	do {
		status = RFTrackingFiltersCorrection(state, state->m_Frequency);
		if (status < 0)
			break;
		status = ChannelConfiguration(state, state->m_Frequency,
					      Standard);
		if (status < 0)
			break;

		msleep(state->m_SettlingTime);  /* Allow AGC's to settle down */
	} while (0);
	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 105 53.03% 1 14.29%
mauro carvalho chehab mauro carvalho chehab 92 46.46% 5 71.43%
oliver endriss oliver endriss 1 0.51% 1 14.29%
Total 198 100.00% 7 100.00%

#if 0
static int GetSignalStrength(s32 *pSignalStrength, u32 RFAgc, u32 IFAgc)
{
        if (IFAgc < 500) {
		/* Scale this from 0 to 50000 */
		*pSignalStrength = IFAgc * 100;
        } else {
		/* Scale range 500-1500 to 50000-80000 */
		*pSignalStrength = 50000 + (IFAgc - 500) * 30;
        }

        return 0;
}
#endif



static int get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
{
	struct tda_state *state = fe->tuner_priv;

	*frequency = state->IF;
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 33 97.06% 1 50.00%
mauro carvalho chehab mauro carvalho chehab 1 2.94% 1 50.00%
Total 34 100.00% 2 100.00%



static int get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
{
	/* struct tda_state *state = fe->tuner_priv; */
	/* *bandwidth = priv->bandwidth; */
	return 0;
}


Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 18 90.00% 1 50.00%
oliver endriss oliver endriss 2 10.00% 1 50.00%
Total 20 100.00% 2 100.00%


static struct dvb_tuner_ops tuner_ops = {
	.info = {
		.name = "NXP TDA18271C2D",
		.frequency_min  =  47125000,
		.frequency_max  = 865000000,
		.frequency_step =     62500
	},
	.init              = init,
	.sleep             = sleep,
	.set_params        = set_params,
	.release           = release,
	.get_if_frequency  = get_if_frequency,
	.get_bandwidth     = get_bandwidth,
};



struct dvb_frontend *tda18271c2dd_attach(struct dvb_frontend *fe,
					 struct i2c_adapter *i2c, u8 adr)
{
	struct tda_state *state;

	state = kzalloc(sizeof(struct tda_state), GFP_KERNEL);
	if (!state)
		return NULL;

	fe->tuner_priv = state;
	state->adr = adr;
	state->i2c = i2c;
	memcpy(&fe->ops.tuner_ops, &tuner_ops, sizeof(struct dvb_tuner_ops));
	reset(state);
	InitCal(state);

	return fe;
}
Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 96 100.00% 1 100.00%
Total 96 100.00% 1 100.00%


EXPORT_SYMBOL_GPL(tda18271c2dd_attach);

MODULE_DESCRIPTION("TDA18271C2 driver");
MODULE_AUTHOR("DD");
MODULE_LICENSE("GPL");
Overall Contributors
Person Tokens Prop Commits CommitProp
ralph metzler ralph metzler 5447 83.12% 1 7.69%
mauro carvalho chehab mauro carvalho chehab 1022 15.60% 10 76.92%
oliver endriss oliver endriss 83 1.27% 1 7.69%
dan carpenter dan carpenter 1 0.02% 1 7.69%
Total 6553 100.00% 13 100.00%
  Directory: drivers/media/dvb-frontends

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
ralph metzler	ralph metzler	71	100.00%	1	100.00%
	Total	71	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.7 drivers/media/dvb-frontends/tda18271c2dd.c

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